Props are now collectible;

Props logic refractor;
maze coordinates cleanup

game/props/radar.rb

@@ -0,0 +1,13 @@
+require_relative "base"
+
+class Radar < Prop
+  def initialize(x, y)
+    super(x, y)
+    @frames_count = 4
+    @spritesheet = Gosu::Image.load_tiles("assets/images/radar.png", 20, 20, retro: true)
+  end
+
+  def resources
+    { wood: rand(0..2), metal: rand(0..8), science: rand(0..2) }
+  end
+end